Packing.



J. S. HETTINGER.

PACKING.

APPLICATION FILED SEPT. so, 1913.

Patented June 16, 1914 I 0 undo:- c nzzz'e fifj eil in ev,

1 an STATES PATENT OFFICE.

JENNIE S. HETTI'NGER, 0F CAMDEN, NEW JERSEY.

PACKING.

To all whom it may concern:

Be it known that I, JENNIF. S. HETTINGER, a citizen of the UnitedStates, residing at Camden, in the county of Camden and State of NewJersey, have invented certain new and useful Improvements in Packings,of which the following is a specification.

My invention relates to improvements in packing, and more particularlyto an improved gasket, the object of the invention being to provide apacking or gasket comprising a spirally wound interlocking metal stripfirmly holding the convolutions together, yet permitting an elasticityof the gasket when pressure is applied thereon.

A. further object is to provide a gasket having an improved constructionof interlocking metal strip with the several sections of saidstripcurved transversely permitting of elasticity to compensate for expansionand contraction, and insure a tight packing under any and allconditions.

\Viththese and other objects in view, the invention consists in certainnovel features of construction and combinations and ar rangemei'lts ofparts as will be more fully hereinafter described and pointed out in theclaims.

In the accompanying drawings: Figure 1 is a plan view illustrating myimprovements. Fig. 2 is a view in cross section on the line 22 of Fig.l, and Fig. 3 is a fragmentary perspective view of my improved metalstrip.

My improved gasket or packing consists of three continuous members 1, 2,and 3.. The members 1 and 3 are strips of asbestos or other suitablenon-metallic material, and are positioned at opposite sides of themember 2 which is a strip of metal. and of the shape shown most clearlyin Figs? and 3.

The strip 2 is of general N-shape in cross section with all threesections thereof curved transversely. As these members are woundspirally, the metal strips 2 interlock as shown most clearly in Fig. 2,and due to the shape of this metal strip 2, the members 1 and 3 arefirmly held between the same when the asket is pressed together. Themetal strip 2 at its angles is formed with sharp projecting flanges 4which embed themselves in the members 1 and 3 and firmly hold thematerial together. It will he observed that the portions of said stripwhere they overlap or interlock. are not provided with these flanges,but in other places Specification of. Letters Patent.

Application filed September 30, 1913.

Patented. June .16, 1.914..

Seria1.N 0. 792,553.

said strip is provided with such flanges, both at the angles and at theedges. In

other words, wherever possible, these locking flanges are provided, soas to grip the fibrous material of the members 1 and 3,

and prevent any possibility of the convolutions separating.

It will be noted that the combined thickness of the members is greaterthan the depth of the metal strip, so that the metal strip is entirelyhid-or covered, and is not seen at either upper or lower surface of thegasket, but only at the inner and outer edges. Furthermore, it will beobserved that the metal strip is so positioned that pressure upon thegasket will tend to curve all portions of the strip, and hence theelasticity of the metal strip is utilized to the maximum extent.

Various slight changes might be made --in the general form andarrangement of parts described without departing from my invention, andhence I do not limit myself to the precise details set forth, butconsider myself at liberty to make such changes and alterations asfairly fall within the spirit and scope of the appended claims.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is:

1.. As a new article of manufacture, a

packing embodying in its construction a spirally Woundinterlooking metalstrip of general N-sha-pe in cross section, substantially as described.

2. A packing comprising a continuous metal strip wit-h non-n'etallicstrips at opposite sides thereof, said metal strips inter locking and ofa Width less thanthe thickness of the packing, substantially asdescribed.

I 3. A packing comprising a metal stri of general N-shape in crosssection witi fibrous strips at opposite sides thereof, and theconvolutions of said metal strip interlocking, substantially asdescribed.

4. A packing com osed of a spirally wound metal strip 0 general N-shapein cross section, the convolutions of said strip interlocking, andnon-metallic material at both sides of said strip, substantially asdescribed.

5. A packing com osed of a spirally wound metal strip 0 general N-shapein cross section, the convolut-ions of said strip interlocking,non-metallic material at both I sides of said strip, and said striphaving its members curved transversely, substantially as described.

6. A packing composed of a spirally wound metal strip 0f generalN-shape. in cross section, the convolutio-ns of said strip interlocking,non-metallic material at both sides of said strip, and said strip havingflanges at its angles embedded in the nonmetallic material,substantially as described.

7. A packing comprising a ring composed of three spirally wound strips,the intermediate strip composed of metal of general N-shape with theconvolutions of said strip interlocking, substantially as described.

8. A packing comprising a ring composed of three spirally wound strips,the intermediate strip composed of metal of general N-shape with theconvolutions of said strip interlocking, and flanges at the angles ofthe metal strip embedded in the non-metallic material-at both sides ofthe strip, substantially as described.

9.'A packing composed of an embedded spirally Wound metal strip, eachconvolution of the strip interlocked with the convolutions of the stripadjacent thereto, substantially as described.

In testimony whereof I have signed my name to this speclfication in thepresence of two subscribing witnemes.

JENNIE S. HETTINGER.

Witnesses:

BENJ. W. GRAVENOR, LILLIE C. GOUNSELLAR.

